Multi-position lock slide



N. A. GUSSACK 2,739,027

March 20, 1956 MULTIPOSITION LOCK SLIDE Filed June 24, 1954 m caINVENTOR Milka/77% 5255:1016 J BY J 7 ATTORNEY United States Patent 2,13MULTI-POSITION LOCK SLIDE Nathan A. Gussack, Flushing, N. Y., assignorto Grant Pulley & Hardware Corporation, Flushing, N. Y., a corporationApplication June 24, 1954, Serial No. 439,659

1 Claim. (Cl. 312-333) mit the drawer to lock in any position within itsdistance of travel.

More specifically, the drawer slide is provided with a rack or platehaving a multiplicity of notches which permits a pin-locking arm toengage in one of the notches of the series of notches to lock the draweror chassis in any desired position in its distance of travel.

For a fuller understanding of the nature and objects of the invention,reference is had to the following detailed description in connectionwith the accompanying drawing, in which:

Fig. 1 is a side elevational view of one of a pair 0 multi-positionslides, shown in open position.

Fig. 2 is an end view, and

Fig. 3 is an enlarged top view taken from line 33 of Fig. 1.

Referring to the drawing, numeral 10 indicated a slide, comprising anouter channel 11 to which a drawer or chassis 12 is attached, anintermediate channel 13, a center trackrplate 14 which is attached to acabinet wall 15, ball spacers 16 with balls 17 therein to facilitatemovement of the outer and. intermediate channels and the drawer orchassis 12 attached to outer channel 11. All the above parts arewell-known in the art.

A release rod 18 is movably attached to the upper flange 19 of the outerchannel 11 by means of brackets 20 which have openings therethrough 'topermit easy movement of rod 18 parallel to the slide 10. Rod 18 has acollar 21 fixed by a set screw 22 and positioned between the twobrackets 20. A spring 23 is seated upon rod 18 between the collar 21 andone of the brackets 20 exerting a constant pressure upon the collar 21.A transverse pin 24 through rod 18 acts to stop the travel of rod 18when it contacts bracket 20. The outer end of rod 18 has a button orhead 25. andthe opposite or inner end 26 is of reduced diameter andenters an opening in a bracket 27 which holds a bell crank 28 which ispivotally attached to bracket 27 by roll pin 29. .The lower arm 30 ofbell crank 28 has a notch 31 within which a transverse pin 32, attachedto end 26, is seated and operates bell crank 28 upon inward pressureupon head 25 causing the horizontal lock arm 33 of the bell crank 28 toraise the locking pin 34 out of one of the notches 35 of the lockingnotched member 36 which is attached to the upper portion of the centertrack plate 14. It is evident that by pushing inwardly upon the head 25of the release rod 18, pin 34 will be disengaged from the notch 35 ofthe locking notch member or plate 36 thus I 2,739,027 Patented Mar. 20,1956 "ice allowing the drawer or chassis 12 to be pulled out or movedinwardly of the cabinet. -By releasing the rod 18 and permitting the pin34 to engage one of the notches 35, the drawer or chassis 12 will belocked in any position along the distance of travelof the slide.

The slide proper, comprising the various parts mentioned operate in amanner well-known in the trade. When the outer channel 11 is movedoutwardly a certain distance, the short stop pins 37 engage the higherball spacers 38, and the intermediate channel 13 then moves outwardlyuntil the locking pin 39 abuts the inner ends of the inner ball spacers16 at which time the slide cannot move outwardly any further.

When the drawer or chassis and the outer channel is moved inwardly, thescrew or stop 40 enters outer notch 41 of the intermediate channel 13and carries the intermediate channel 13 inwardly until the inner notch42 of the intermediate channel 13 abuts the screw or stop 43 of thecenter track 14.

. It is obvious that the slide and its various parts can be made longeror shorter and the notched rack 36 made I of a desired length to permitlocking of the drawer at any desired point in its outer or innermovement.

It is further obvious that various changes and modifications may be madein the details of construction and. arrangement of parts withoutdeparting from the general spirit of the invention.

I claim:

In a cabinet comprising an outer side wall, a horizontal centraltrack'member secured to the inner surface of said wall provided with topand bottom ways; an intermediate channel member having the flangesthereof disposed in spaced overlapping relation respectively to said topand bottom ways; an outer channel member secured to a drawer member,said outer channel member having the flanges thereof disposed in spacedoverlapping relation to the flanges of said intermediate channel mem-"ber; ball spacer members having balls therein disposed between saidtrack member and the flanges of said intermediate channel member toprovide anti-friction rolling contact between said flanges and saidtrack; ball spacer members with balls therein disposed between theflanges of the outer channel member and the outer surfaces of theflanges of the intermediate channel member; a rack member having aplurality of notches thereon rigidly secured with said central trackmember; a latch lever pivotally mounted on said outer channel memberprovided with a laterally projecting locking pin to en: gage any of saidnotches; a push rod slidably mounted on said outer channel member andengaging an arm of said latch lever to pivot the same so as to releasethe locking pin from locking engagement with said rack; and

spring means engaging said push rod to yieldingly hold the push rod inposition so as to urge the latch into locking engagement with said rackin any of said notches depending upon the position of said drawermember.

References Cited in the file of this patent UNITED STATES PATENTS

